How to create stuff like this?

Hi warriors

Please, I would like to know how to create a clickbank product checkout page like this: Ex Back Experts

This clickbank vendor did a great strategie and I want to do the same, when the visitor click on the "add to card" image which appear in the sales page, he is not rediricted to clickbank chekout page, but into this page where he can review his order

But the problem is not here, which I still did not understand how to do is the monthly membership free trial, by default, the box is checked, and of cource the customer can uncheck it, if he keep it chekep, his credit card will automaticly been billed "reccuring payment", if he unckeck it, no recurring payment will be!

this product wner use optimizepress, I asked Kevin "one of optimizepress staff" he told me that their is no feature like this in OP, so, do you know how he did this?